text: 'use strict'
  
  /*
   * Create the `sign` function that takes one number argument
   * and return 1 if the number is positive, -1 if the number is negative
   * and 0 if the number is exactly 0
   * You must not just use `Math.sign`, make your own.
   * see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/sign
   *
   * @notions Functions, If-Else
   */
  
  // Your code :
  function sign (i){
      if (i>0)
      return 1
      if (i<0)
      return -1
      if (i===0)
      return 0
  }
  //* Begin of tests
  const assert = require('assert')
  
  assert.strictEqual(typeof sign, 'function')
  assert.strictEqual(sign.toString().includes('Math.sign'), false)
  assert.strictEqual(sign.length, 1)
  assert.notStrictEqual(sign, Math.sign)
  assert.strictEqual(sign(-2), -1)
  assert.strictEqual(sign(10), 1)
  assert.strictEqual(sign(0), 0)
  assert.strictEqual(sign(132), 1)
  // End of tests */
  